diff --git a/perception/autoware_tensorrt_yolox/include/autoware/tensorrt_yolox/calibrator.hpp b/perception/autoware_tensorrt_yolox/include/autoware/tensorrt_yolox/calibrator.hpp
index 3a2bac315a3d0..46305b12c0de6 100644
--- a/perception/autoware_tensorrt_yolox/include/autoware/tensorrt_yolox/calibrator.hpp
+++ b/perception/autoware_tensorrt_yolox/include/autoware/tensorrt_yolox/calibrator.hpp
@@ -248,19 +248,19 @@ class Int8LegacyCalibrator : public nvinfer1::IInt8LegacyCalibrator
     output.write(reinterpret_cast<const char *>(cache), length);
   }
 
-  double getQuantile() const noexcept
+  double getQuantile() const noexcept override
   {
     printf("Quantile %f\n", quantile_);
     return quantile_;
   }
 
-  double getRegressionCutoff(void) const noexcept
+  double getRegressionCutoff(void) const noexcept override
   {
     printf("Cutoff %f\n", cutoff_);
     return cutoff_;
   }
 
-  const void * readHistogramCache(std::size_t & length) noexcept
+  const void * readHistogramCache(std::size_t & length) noexcept override
   {
     hist_cache_.clear();
     std::ifstream input(histogram_cache_file_, std::ios::binary);
@@ -279,7 +279,7 @@ class Int8LegacyCalibrator : public nvinfer1::IInt8LegacyCalibrator
     }
     return length ? &hist_cache_[0] : nullptr;
   }
-  void writeHistogramCache(void const * ptr, std::size_t length) noexcept
+  void writeHistogramCache(void const * ptr, std::size_t length) noexcept override
   {
     std::ofstream output(histogram_cache_file_, std::ios::binary);
     output.write(reinterpret_cast<const char *>(ptr), length);